/* ==========================================================================
   BANGESA – Layout por secciones (Mobile First: base 320–375px)
   ========================================================================== */

/* Imagen de fondo decorativa de sección (en <img>, no en CSS, para
   aprovechar lazy-loading, srcset y fetchpriority) */
.bg-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.bg-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-fixed);
  height: var(--navbar-height);
  background-color: var(--color-charcoal);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  flex: none;
  display: block;
  line-height: 0;
}

.header__logo img {
  width: auto;
  height: 32px;
}

.header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: none;
  border: 0;
  cursor: pointer;
}

.header__toggle-bar {
  display: block;
  height: 2px;
  background-color: var(--color-text-inverse);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
  opacity: 0;
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Menú móvil: panel a pantalla completa bajo el header */
.header__nav {
  position: fixed;
  inset: var(--navbar-height) 0 0 0;
  display: none;
  flex-direction: column;
  gap: var(--space-xl);
  padding: var(--space-xl) var(--container-padding);
  background-color: var(--color-charcoal);
  overflow-y: auto;
}

.header__nav.is-open {
  display: flex;
}

.header__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.header__nav-link {
  display: block;
  padding: var(--space-md) 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-inverse);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header__nav-link:hover {
  color: var(--color-primary-light);
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  padding: calc(var(--navbar-height) + var(--space-2xl)) 0 var(--space-3xl);
  background-color: #8a3a2a;
  color: var(--color-text-inverse);
  text-align: center;
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: var(--z-raised);
}

.hero__title {
  color: var(--color-text-inverse);
  font-size: clamp(2rem, 9vw, 4rem);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
}

.hero__eyebrow {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.5em;
  font-weight: var(--font-regular);
  letter-spacing: 0.02em;
}

.hero__lead {
  max-width: 40rem;
  margin: var(--space-lg) auto 0;
  font-size: var(--text-lg);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.hero__actions .btn {
  min-width: 12rem;
}

/* ==========================================================================
   INTRO (soluciones que hacen avanzar proyectos)
   ========================================================================== */
.intro {
  position: relative;
  display: flex;
  align-items: flex-start;
  min-height: 34rem;
  padding: var(--space-3xl) 0;
  background-color: #e6e6e6;
  overflow: hidden;
}

/* Velo claro en móvil para garantizar legibilidad sobre la foto */
.intro::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(243, 243, 243, 0.92) 0%, rgba(243, 243, 243, 0.75) 60%, rgba(243, 243, 243, 0) 100%);
}

.intro .bg-media img {
  object-position: 70% bottom;
}

.intro__content {
  position: relative;
  z-index: var(--z-raised);
  max-width: 28rem;
}

.intro__title {
  font-size: clamp(1.625rem, 6.5vw, 2.5rem);
  color: var(--color-primary-dark);
}

.intro__text {
  margin: var(--space-md) 0 var(--space-xl);
  font-weight: var(--font-semibold);
  color: var(--color-charcoal);
}

/* ==========================================================================
   FORMA DE TRABAJAR
   ========================================================================== */
.valores {
  padding: var(--space-3xl) 0;
  background-color: var(--color-charcoal);
}

.valores__list {
  display: grid;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
}

.valor {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: var(--color-text-inverse);
}

/* Anillos concéntricos rojos alrededor del ícono */
.valor__icon {
  display: grid;
  place-items: center;
  width: 7rem;
  height: 7rem;
  margin-bottom: var(--space-lg);
  border-radius: 50%;
  background-color: var(--color-text-inverse);
  color: var(--color-charcoal);
  box-shadow:
    0 0 0 0.4rem var(--color-primary),
    0 0 0 0.8rem rgba(var(--color-primary-rgb), 0.65),
    0 0 0 1.2rem rgba(var(--color-primary-rgb), 0.4),
    0 0 0 1.6rem rgba(var(--color-primary-rgb), 0.2);
}

.valor__icon img {
  width: 4.5rem;
  height: 4.5rem;
}

.valor__title {
  margin-top: var(--space-md);
  font-size: var(--text-base);
  color: var(--color-text-inverse);
}

.valor__text {
  max-width: 16rem;
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
}

/* ==========================================================================
   LO QUE HACEMOS
   ========================================================================== */
.servicios {
  padding: var(--space-3xl) 0;
}

.servicios__list {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.servicio__media {
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.servicio__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.servicio__title {
  margin-top: var(--space-md);
  font-size: var(--text-lg);
  text-transform: none;
  letter-spacing: 0.01em;
}

.servicio__tagline {
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-charcoal);
}

.servicio__text {
  margin-top: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   SECTORES
   ========================================================================== */
.sectores {
  padding: var(--space-3xl) 0;
  background-color: var(--color-primary-section);
}

.sectores__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  margin: var(--space-xl) 0;
}

.sectores__item {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  color: var(--color-text-inverse);
}

.sectores__gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.sectores__figure {
  margin: 0;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.15);
}

.sectores__figure img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.sectores__figure--main {
  grid-column: 1 / -1;
}

/* ==========================================================================
   NOSOTROS
   ========================================================================== */
.nosotros {
  position: relative;
  padding: var(--space-3xl) 0;
  background-color: var(--color-bg);
  overflow: hidden;
}

.nosotros__inner {
  position: relative;
  z-index: var(--z-raised);
}

.nosotros__grid {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.nosotros__text {
  display: grid;
  gap: var(--space-lg);
  color: var(--color-text);
}

.nosotros__figure {
  margin: 0;
  border: 5px solid var(--color-charcoal);
  background-color: var(--color-charcoal);
}

.nosotros__figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* ==========================================================================
   CONTACTO
   ========================================================================== */
.contacto {
  padding: var(--space-3xl) 0;
  background-color: var(--color-primary-section);
}

.contacto__lead {
  font-weight: var(--font-bold);
  text-transform: uppercase;
}

.contacto__panel {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  padding: var(--space-lg);
  background-color: var(--color-charcoal-deep);
  box-shadow: var(--shadow-lg);
}

.contacto__legend {
  margin-bottom: var(--space-md);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  color: var(--color-text-inverse);
}

.contacto__actions {
  text-align: center;
}

.contacto__map {
  min-height: 18rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: #cfe3d8;
}

.contacto__map iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 18rem;
  border: 0;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  color: var(--color-text-inverse);
}

.footer__main {
  position: relative;
  padding: var(--space-3xl) 0;
  background-color: var(--color-navy-deep);
  overflow: hidden;
}

.footer__main .bg-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--color-overlay);
}

.footer__inner {
  position: relative;
  z-index: var(--z-raised);
  display: grid;
  gap: var(--space-xl);
}

.footer__logo img {
  width: auto;
  height: 56px;
}

.footer__social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer__social a {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  transition: background-color var(--transition-fast);
}

.footer__social a:hover {
  background-color: var(--color-primary);
}

.footer__social svg {
  width: 20px;
  height: 20px;
}

.footer__contact {
  display: grid;
  gap: var(--space-lg);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: var(--text-sm);
}

.footer__contact-item svg {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  color: var(--color-primary-light);
}

.footer__contact-item a {
  text-decoration: none;
}

.footer__contact-item a:hover {
  text-decoration: underline;
}

.footer__credit {
  padding: var(--space-md) 0;
  background-color: var(--color-navy-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: var(--text-xs);
  text-transform: uppercase;
  text-align: center;
}

.footer__credit p {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.footer__credit a {
  display: inline-block;
  line-height: 0;
}

.footer__credit img {
  width: auto;
  height: 28px;
}

/* ==========================================================================
   TABLET ≥ 768px
   ========================================================================== */
@media (min-width: 768px) {
  .hero__actions {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-xl);
  }

  .intro {
    align-items: center;
    min-height: 28rem;
  }

  .intro::before {
    background: linear-gradient(90deg, rgba(243, 243, 243, 0.9) 0%, rgba(243, 243, 243, 0.6) 45%, rgba(243, 243, 243, 0) 70%);
  }

  .valores__list {
    grid-template-columns: repeat(2, 1fr);
  }

  .servicios__list {
    grid-template-columns: repeat(2, 1fr);
  }

  .sectores__gallery {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
  }

  .sectores__figure--main {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
  }

  .sectores__figure img {
    aspect-ratio: auto;
    min-height: 12rem;
  }

  .nosotros__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-2xl);
  }

  .contacto__panel {
    padding: var(--space-xl);
  }

  .contacto__fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-md);
  }

  .contacto__fields .form-group--full {
    grid-column: 1 / -1;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .footer__contact {
    justify-self: end;
  }
}

/* ==========================================================================
   DESKTOP ≥ 1024px
   ========================================================================== */
@media (min-width: 1024px) {
  .header__logo img {
    height: 40px;
  }

  .header__toggle {
    display: none;
  }

  /* El <nav> deja de ser caja: lista y botón pasan a ser hijos directos de
     .header__inner, que (space-between) reparte 3 bloques: logo | menú | botón */
  .header__nav {
    display: contents;
  }

  .header__nav-list {
    flex-direction: row;
    gap: 0;
  }

  .header__nav-link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    border-bottom: 0;
  }

  /* Separadores rojos entre ítems, como en el diseño */
  .header__nav-list li + li .header__nav-link {
    border-left: 1px solid var(--color-primary);
  }

  .header__nav .btn {
    max-width: 12rem; /* más angosto que el texto: el salto de línea es automático */
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-xs);
    line-height: 1.3;
  }

  .valores__list {
    grid-template-columns: repeat(4, 1fr);
  }

  .servicios__list {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }

  .contacto__panel {
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-2xl);
  }

  .contacto__form {
    display: contents;
  }

  /* El botón Enviar queda centrado bajo ambas columnas */
  .contacto__form-fields {
    grid-column: 1;
  }

  .contacto__map {
    grid-column: 2;
    grid-row: 1;
    min-height: 100%;
  }

  .contacto__actions {
    grid-column: 1 / -1;
  }
}

/* ==========================================================================
   DESKTOP AMPLIO ≥ 1200px: más aire en el menú
   ========================================================================== */
@media (min-width: 1200px) {
  .header__nav {
    gap: var(--space-xl);
    margin-left: var(--space-2xl);
  }

  .header__nav-link {
    padding-inline: var(--space-md);
  }
}